technique to manipulate water waves to precisely control floating objects

3 days ago 3
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Where there's water, there are waves. But what if you could bend water waves to your will to move floating objects? Scientists have now developed a technique to merge waves in a water tank to produce complex patterns, such as twisting loops and swirling vortices. Some patterns acted like tweezers or a 'tractor beam' to hold a floating ball in place. Other patterns made the ball spin and move precisely in a circular path. In the future, the technique could be scaled down to precisely move particles the size of cells for experiments, or scaled up to guide boats along a desired path on the water.
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